package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.OrdersPageQueryDTO;
import com.sky.dto.OrdersPaymentDTO;
import com.sky.dto.OrdersSubmitDTO;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.AddressBookService;
import com.sky.service.OrdersService;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.websocket.WebSocketServer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * 地址簿管理
 */
@Service
@Slf4j
public class OrdersServiceImpl implements OrdersService {

    @Autowired
    private OrdersMapper ordersMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Autowired
    private WebSocketServer webSocketServer;
    /**
     * 用户下单
     */
//    @Transactional //事务注解
    public OrderSubmitVO submit(OrdersSubmitDTO ordersSubmitDTO) {
        //处理业务异常（地址簿数据为空 购物车为空）
        //查询是否有地址簿
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if (addressBook == null) {
            //抛出业务异常
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        //查询购物车是否为空
        ShoppingCart shoppingCart = new ShoppingCart();
        Long userId = BaseContext.getCurrentId();
        shoppingCart.setUserId(userId);
        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
        if (shoppingCartList == null || shoppingCartList.size() == 0) {
            //抛出业务异常
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }

        // 向订单表插入一条数据
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO, orders);
        orders.setOrderTime(LocalDateTime.now());//下单时间
        orders.setPayStatus(Orders.UN_PAID); //未支付
        orders.setStatus(Orders.PENDING_PAYMENT); //待付款
        orders.setNumber(String.valueOf(System.currentTimeMillis())); //用时间戳当订单号
        orders.setPhone(addressBook.getPhone()); //手机号
        orders.setCancelReason(addressBook.getConsignee()); //收货人
        orders.setUserId(userId);
        ordersMapper.insert(orders);
        List<OrderDetail> orderDetailList = new ArrayList<>();
        // 向订单明细表插入N条数据
        for (ShoppingCart cart : shoppingCartList) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart, orderDetail);
            orderDetail.setOrderId(orders.getId()); //设置当前订单明细关联的id
            orderDetailList.add(orderDetail);
        }
        //批量插入订单明细数据
        orderDetailMapper.insertBatch(orderDetailList);
        //清空当前用户得购物车数据
        shoppingCartMapper.deleteByUserId(userId);
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder().id(orders.getId()).orderTime(orders.getOrderTime()).orderNumber(orders.getNumber()).orderAmount(orders.getAmount()).build();
        //测试使用才放到这
        //通过websocket向浏览器推送消息 type orderId  content
        Map map = new HashMap();
        map.put("type",1);//1表示来单提醒 2表示客户催单
        map.put("orderId",orders.getId());
        map.put("content","订单号：" + orders.getId());
        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);
        return orderSubmitVO;
    }

    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

        //调用微信支付接口，生成预支付交易单
        JSONObject jsonObject = weChatPayUtil.pay(
                ordersPaymentDTO.getOrderNumber(), //商户订单号
                new BigDecimal(0.01), //支付金额，单位 元
                "苍穹外卖订单", //商品描述
                user.getOpenid() //微信用户的openid
        );

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = ordersMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        ordersMapper.update(orders);

        //通过websocket向浏览器推送消息 type orderId  content
        Map map = new HashMap();
        map.put("type",1);//1表示来单提醒 2表示客户催单
        map.put("orderId",ordersDB.getId());
        map.put("content","订单号：" + outTradeNo);
        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);

    }


    /**
     * 客户催单
     */
    public void reminder(Long id) {
        // 根据订单号查询订单
        Orders ordersDB = ordersMapper.getById(id);
        if(ordersDB == null){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        //通过websocket向浏览器推送消息 type orderId  content
        Map map = new HashMap();
        map.put("type",2);//1表示来单提醒 2表示客户催单
        map.put("orderId",ordersDB.getId());
        map.put("content","订单号：" + ordersDB.getNumber());
        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);
    }

    /**
     * 查询历史订单
     */
    public PageResult getHistoryOrders(OrdersPageQueryDTO ordersPageQueryDTO) {
        //开始分页查询-会对紧跟着的一条SQL进行分页查询
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        Page<Orders> page =   ordersMapper.getHistoryOrders(ordersPageQueryDTO);
        long total = page.getTotal();
        List records = page.getResult();;
        return new PageResult(total,records);
    }
}
